MID - VALLEY PIPELINE CO
hazardous_liquid Incident —
Incident Information
| Report Date | — |
| Operator | MID - VALLEY PIPELINE CO |
| Commodity | — |
| Pipeline Type | hazardous_liquid |
Location
| State | |
| Coordinates | 41.22810, -83.64009 |
Cause
| Cause | MATERIAL FAILURE OF PIPE OR WELD |
| Subcause | — |
Casualties
| Fatalities | 0 |
| Injuries | 0 |
Costs
| Property Damage | — |
| Lost Commodity | — |
| Public/Private Damage | — |
| Emergency Response | — |
| Environmental Remediation | — |
| Other Costs | — |
Location Map
Incident Narrative
ON 12/23/22 AT 8:01 AM, LOCAL OPERATIONS REPORTED A CRUDE OIL RELEASE AT CYGNET PUMP STATION. THE CONTROL CENTER WAS IMMEDIATELY NOTIFIED TO ISOLATE THE STATION AND CLOSE BLOCK VALVES. APPROXIMATELY1,974 BARRELS OF CRUDE OIL WAS RELEASED. ADJACENT LOCAL ROAD WAS TEMPORARILY CLOSED. COMPANY PERSONNEL AND OIL SPILL RESPONSE CONTRACTORS WERE MOBILIZED TO CONTAIN AND RECOVER RELEASED PRODUCT. COMPANY SET UP AN INCIDENT RESPONSE TEAM THAT WORKED WITH ALL FEDERAL AND STATE AGENCIES TO ENSURE RESPONSE, RECOVERY EFFORTS AND PIPELINE REPAIR AND RESTART WERE COMPLETED APPROPRIATELY. THE REPAIR WAS COMPLETED ON 12/28/22 BY INSTALLING A NEW 22-INCH X 16-INCH TEE. THE LINE WAS RESTARTED ON 12/28/22 AT 20:15. VISUAL INSPECTIONS OF OTHER LIKE/SIMILAR BRANCHED CONNECTIONS AT CYGNET WERE PERFORMED. THE CAUSE OF THE FAILURE IS UNDER INVESTIGATION AND PENDING 3RD PARTY LABORATORY ANALYSIS. WHEN THE INVESTIGATION IS COMPLETE, A SUPPLEMENTAL 7000-1 REPORT WILL BE FILED. SUPPLEMENTAL & FINAL REPORT CAUSE OF THE FAILURE WAS DETERMINED BY METALLURGICAL ANALYSIS WHICH INDICATED THAT THE FAILURE OF THE WELD BETWEEN THE WELD-O-LET AND CARRIER PIPE OCCURRED AS A RESULT OF OVERLOAD AT A PRE-EXISTING HYDROGEN-ASSISTED COLD CRACK. THERE WAS NO EVIDENCE OF FATIGUE INDICATING THAT THE HYDROGEN-ASSISTED COLD CRACK DID NOT GROW OVER TIME.
About This Pipeline Incident
Pipeline incident data is reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA). All significant incidents involving fatalities, injuries, or property damage over $50,000 must be reported.